Improvement in spoke-lathes



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j To all whom it qna/yoiwewt:

`-erronea ALMY, or TOLEDO,- OHIO.

`Lette-rs vPatent No. `100,836, dated March 15, 1870.

mmapd4 p IMPROVEMENT 1N sPoKE-LATHES.

The Schedule referred to in these Letters Patent and making part of the same Be it known that I, GEORGE FQALMY, of Toledo, -in the county of Lucas, and State of Ohio,

have invented a new `and improved Best for Lathes`` for Turning Spokes;` and I do hereby declare that f the following is a full, clear, and exact description of the same, reference` being had to the accompanying drawings and to the letters of reference marked there- On making a part of this specification. l

This invention relates `to anew and useful attachment to be applied to lathes for turning spokes, and

`is designed to facilitate the turning Of such articles, y and to insure them being turned of uniform'thickness v and shape.

The invention consists in the adaptation of a vibrating bed to a lathe, arranged, applied, and. Operated in such a manner as to give,by its vibration, the proper shape to the spoke, said bed being provided with a rest, arranged and applied in such a manner that it will bear against the spoke about at its center, prevent all tremoror vibration of the same between its centers, and at the same time adapt itselt" to the movement of. the vibrating4 bed,

so as. to have at all times, a proper 'bearing against the spoke, about at right angles to the same.-4

In the accompanying sheet of drawings- Figui-e1 is a plan or top view of my invention. Figure 2, aV transverse vertical section of the same, taken inthe line xa, tig'. 1. Figure 3, afront view of the same.

.Similar letters of reference' indicate 'corresponding parts in the several figures.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

' A representsthe bed of a turning-lathe, or a portion thereof, which is fixed or`has no movement or motion whatever-, and l B represents a vibrating bed, which works on a pivot, a, near one end, as shown in iig. `2.

On this bed B the centers C D of the lathe are fixed, between which centers the spoke Ax to be turned-is placed.

On theman'drel E of the center C there is keyed an oval or eccentric, F, which serves as a pattern'for vibrating the bed B, and giving the desired shape to the spoke.

This oval or eccentric works against a bearing, G,

` attached tothe xed bedA of the lathe, the Oval or eccentric giving the backward motion'to the bed spoke, in being-turned, will gradually assume` a less` oval form'from C to D, it being nearly'or quite circular in its' transverse section at D. y I represents a rest which is attached bya bolt,

` 11,4to the front end of`a lever, J, the latter being the lever J, to which the rest is attached.

secured by a pivot, c, to a bent arm, K, which is secured by a pin or pivot bolt, d, to the vibrating bed B.

The longer part of this arm K,which is beyond or to the left Ofwthe pinv Or pivot bolt (l, is slotted longitudinally, as shown at e, and an upright pin, f, which is attached to the fixed bed A, aud' isadjustable, passes through the slot e in the arm K.

By this arrangement thef rest, during the movement or vibrations of the bedl B, iskept about atl right angles with the spoke, against which it bears and prevents the spoke 'from trembling Or vibrating, so that it will not be he turned uncvenly Or irregularly.

\ L is a handle, attached to the bed B, and having' a screw, y, passing through it, to serve as 'a stop for The chisel or cutter (not shown) is arranged so as to travel in a right line, and at suchan angle with the axis of the spoke as to cut or turn the latter in ytaper form longitudinally.

-' An Ordinary slide-rest may be used for this purpose.

The distinguishing features of this invention con- 'sist of the vibrating bed' B, and the application or arrangement Of the rest I,the former giving the ovalv form to the spoke in its transverse section, andl the latter serving as an eiiicient bearing for the` spoke, yielding or giving to the motion of the same in about a linejat right angles "to its axis, so as not to interfere with the oval shape being given it.

This invention may be applied to any turninglathe, and at an inappreciablc additional expense.`

The mandrel E may be rotated by a belt, A

I @do not confine myself to the oval pattern and spring for Vibrating the bed B, for other means may be employed for that purpose.

I do not claim, broadly, a pivoted table Icarrying the spoke-centers, and an eccentric by means of which the table is vibrated, aslv am aware that Athis is not new; but i Having thus described my invention,

What I claim yas new, and desire to secure by'Letters Patent, is-

' l.. The rest I and lever J, in combination with the pivoted angular lever K, slotted, as shown, adjustable pin f, and the arm L, with set-screw g, all constructed, arranged, and operating substantially as herein described. Y Y

2. The arrangement of the stationry table A, vibrating table B, with centers C D, mandrel E, and cam F, the arm G, spring H, rest I, levers J K, and arm L, with set-screw g, all constructed to operate as herein described..

The above specification of my invention signed by me this 13th day of August, 1869.

. GEO. F.'ALMY.

' Witnesses: y i

DOUGLAS H. HINE, A. W. FOwLnn, 

